Draw-bar yoke.



G. C. MURRAY.

DRAW BAR YOKE. APPLICATION FILED AUG-.17, 19H.

Patented Sept. 14, 1915.

2 SHEETS-SHEET I Ya. M

G. C. MURRAY.

DRAW BAR YOKE. APPLICATION FILED AUG. 17. I911.

Patented Sept. 14., 1915.

2 SHEETS-SHEET 2.

COLUMBIA PMNGURAPH co.. WASHINGTON. D. c.

GEORGE e. MURRAY, or onrone'o, Item-61s, ASSIGNOBI ronnronn'i RAILWAY EQUIP vrnnr oorrrAnY, A oonronn'rrolv or nnrawaan. i

Dnawmnn YOKEI Patented Sept. 14,1915.

jA eneati-en' fi ea Au tst 17, 1911; serial no. sensed To aZZ whom it may concern." p v Be it known th t 1, Greece 0. Mrmnev, a citizen of the United States, resid ng at Chicago, in the county of Cook and State of Illinois, have invented certainnewam useful Improvements in Draw-Bar Yokes, of which the following'is a specification. The object of my invention is to provide an improved form-of yoke for railway ear draft riggings, the. for'mlof yoke herein described and claimed being especially adapt, ed for use with the ty' 1e known as tandem draft ri'gg i'ngs', in which two draft springs lying in the same longitudinal line and separately operated upon by the draft. and bufiing forces are" employed. The object of my invention more partieslarly is to so constructthe rigging'that the draw-bar may bereadil'y detached therefrom without disturbingthe draft-rigging, and so that in case ofnecessity the draft riging may be removed from-the yoke'with the minimum amount of disturbanceto the other parts of the Inechanism.=

In the drawings, Figure 1 is a side view partially in section of a tandem draft rigging having my improved; yoke applied thereto. Fig. 2 is a perspective view of the upper member of the yoke. Fig. 3 is a perspective view of the lower member of the yoke. Fig. 4 is a cross sectional view on the line 4, 4 of Fig. 1. Fig. 5 is a horizontal sectional view upon an enlarged scale of the structure shown in Fig. 1.

Referring to Fig. 5, which best illustrates the operation of the tandem draft rigging to which my improved yoke is adapted to be applied, the cheek plates 1 are secured by riveting or otherwise to the inner faces of the draft sills 2 and are provided with what may be termed buffing stops 3, 4, 5, and 6 and with draft stops 7, 8, 9 and 10. The draft rigging as an entirety may be supported in any preferred manner not illustrated. Followers 11, 12, 13 and 14 lie between the cheek plates and are free to move within the limits defined by the stops reor draft riggings draw-bar 19 coacts directly 'with" are followerll and is" connected by means of the key 20with the outer end of the yoke 17, the form" of such connection being described more-fully below; as will be readily understood, upon-a buffing. strain the draw-bar 19 moves" inwardly carrying with it the fol-. lower 11 and yoke17, of which the brid e 18 is: apara' nd the bridge 18 acts directly the follower The buffing blow is t "'er'eby restrained b the cumulative resistance of the springs 5 and 16, the followers 12 and 14 atithis time remaining stationary against the bufling stops 6 and 4. Upon" a pulling strain. the reverse action takes place. The general operation of tandem draft riggingsof this type being well understood by those familiar with the art, further eXpla-- nation is unnecessary. It has heretofore been customary to construct the bridge 18 of a,

he draw-bar 19 is as usual provided with an enlarged butt end 21 forming shoulders 22 with which the inturned ends 23 of the yoke coact. The yoke in the form illustrated in Figs. 1 to 5 consists of two members 24 and 25 connected at their inner ends by some form of hinged connection 26, the precise form of this connection being immaterial, provided that it admits of a turning movement between the members 24 and 25 without the actual separation thereof. Intermediate the ends of the members 24 and 25 I provide inward projections 26, 27, which may be cored out at 28 to save material and to make the structure lighter. A cross-bolt 29 threaded and provided with a nut 30 serves to secure the yoke members together at their central parts and to pre-- vent them from bending outwardly under excessive strain. In a sufiiciently heavy construction, however, such a bolt might be found unnecessary. The bolt hole in the lower yoke member 25 is preferably elongated somewhat longitudinally, as indicated at 81, in order to permit the lower yoke member to be turned upon the hinge 26 without binding upon the bolt. At its outer end the yoke member 24 is provided with member 25 to be moved downwardly, -its hinge 26 sufliciently to release the v fiected outwardly and depending ears 32 having apertures 33 designed to receive the key 20. The lower yoke member 25 is provided with upwardly extending ears 34 provided with key apertures 35. The ears 34 are preferably deformed upon their inner faces with shoulders 36 in order that when the'structure is assembled the ears 32 may lie inside of the ears 34 with their lower edges abutting against the shoulders 36.

en it is necessary to replace the drawbar 19 it is necessary only to withdraw the key from the structure as illustrated in enough so that the nut 30 can be loosened sufficiently to permit the downward movement of the yoke member without rem0ving the nut from the bolt. If it'becomes necessary to replace the" draft springs or other parts of the draft rigging this can likewise be done without dlsturbing the upper yoke members and without disconnecting the upper and lower yoke members.

While Ihave described a specific embodiment of my-invention, it will be apparent that the principle thereof can be applied in practice without adhering to the precise form of mechanism illustrated.

I claimz'f v V 1. In a: device of the class described, a

yoke comprising two members hinged together at one end and provided at the opposite end with apertured ears adapted to overlap and receive a key when said yoke is closed, and abutments integral with the arms of said yoke intermediate its ends and adapted to coact with a draft rigging contained within said yoke.

2. In a device of the class described, a yoke comprising two members hinged together at one end and provided at the opposite end with inwardly projectin shoulders adapted to coact with outwar 1y projecting shoulders on a draw-bar and also provided at said oppositeend with apertured ears adapted to overlap when said yoke is closed and receive a key passing through saidears and draw-bar. and abutments integrally formed with said members and projecting inwardly of said yoke, said abutments being adapted to coact with a draft rigging contained within said yoke.

3. Ina device of the class described, the yoke members 24, 25 connected at one end by the hinge 26 and provided at theopposite ends'with the inturned ends 23 and also provided at such opposite ends with the ears 32, 34 having apertures 33, therein, abutments integral with the yoke arms, and a bolt connecting said abutments.

In testimony whereof, I have subscribed my name.

. GEORGE O. MURRAY. lVitnesses EDYTHE M. ANDERSON, ANNA L. WALTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

' Washington, D. G. 

